Digital image correlation for small strain measurement in deformable solids and geomechanical structures
- 1 September 2015
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 4, 3324-3328
Abstract
Digital image correlation (DIC) is a well-known contact-less technique offering highly accurate full-field deformation measurement using grayscale images. The practical implementation of DIC is still facing many challenges, especially limitations of accuracy in measuring small displacement gradients for solids in geosciences and biomedi-cal engineering. In this paper, we introduce a novel approach in which color images are employed to enhance the performance of DIC. A complete framework for Color DIC has been proposed and tested. The results show that Color DIC performs significantly better than grayscale DIC for measurement of small strains by a factor of 2.Keywords
This publication has 33 references indexed in Scilit:
- Stiffness at small strain: research and practiceGéotechnique, 2011
- Measuring the thermal expansion coefficient of tubular steel specimens with digital image correlation techniquesOptics and Lasers in Engineering, 2010
- Monitoring of civil engineering structures using Digital Image Correlation techniqueEPJ Web of Conferences, 2010
- Strain localization in soft rock—a typical rate‐dependent solid: experimental and numerical studiesInternational Journal for Numerical and Analytical Methods in Geomechanics, 2005
- A three-dimensional digital image correlation technique for strain measurements in microstructuresJournal of Biomechanics, 2004
- Applications of digital image correlation to biological tissuesJournal of Biomedical Optics, 2004
- Strain-rate-dependent rheology of partially molten rocksGeological Society, London, Special Publications, 2004
- Subpixel displacement and deformation gradient measurement using digital image/speckle correlation (DISC)Optical Engineering, 2001
- Quantifying the strain history of bone: spatial uniformity and self-similarity of low-magnitude strainsJournal of Biomechanics, 2000
- The effect of strain rate on rock strengthRock Mechanics and Rock Engineering, 1991